kubectl get

# Get summary
kubectl get "po"
kubectl get "po,svc"
kubectl get "all"

# Get the yaml manifest
kubectl get po/my-pod -o yaml

# Backup all resources
kubectl get "all" --all-namespaces -o yaml > "all-resources.yaml"

--selector (-l)

• Filter by label

kubectl get "po" -l "app=myapp"
kubectl get "po" -l "app=myapp,component=web" # multiple labels

--watch (-w)

kubectl get "po" -w
watch -n2 kubectl get "po" # gnu watch

--sort-by

kubectl get "event" --sort-by ".metadata.creationTimestamp"

--no-headers

kubectl get "po" --no-headers | wc -l # count number of pods

--show-labels

kubectl get "po" --show-labels

--all-namespaces (-A)

kubectl get "po" -A

--namespace (-n)

• If not provided, use the default namespace

kubectl get "po" -n "namespace"

--context

kubectl get "po" --context <context>

--output (-o)

kubectl get "po" -o "wide" # additional info
kubectl get "po" -o "yaml" # output as yaml

# jsonpath
kubectl get "po" \
  -o=jsonpath='{​range .items[*]}​{​"\n"}​{​.metadata.name}​{​":\t"}​{​range .spec.containers[*]}​{​.image}​{​", "}​{​end}​{​end}​'

kubectl get "vs" \
  -o jsonpath='{​​​​​​​​range .items[*]}​​​​​​​​{​​​​​​​​"\n"}​​​​​​​​{​​​​​​​​"service: "}​​​​​​​​{​​​​​​​​.spec.http[0].route[0].destination.host}​​​​​​​​{​​​​​​​​", Prefix: "}​​​​​​​​{​​​​​​​​range .spec.http[0].match[*]}​​​​​​​​{​​​​​​​​", "}​​​​​​​​{​​​​​​​​.uri.prefix}​​​​​'

kubectl get "po" "my-pod" \
  --output jsonpath="{.spec.containers[0].image}" | awk -F "/" '{print $2}' | awk -F ":" '{print $2}'

Authentication

kubectl get po \
  --server "my-kube-playground:6443" \
  --client-certiticate "admin.key" \
  --client-key "admin.key" \
  --certificate-authority "ca.crt"

• Instead of passing these parameters manually you might want to set them in a kubeconfig file

kubectl get po \
  --kubeconfig "kubeconfig.yaml"

Object shortnames

kubectl get "no"
kubectl get "svc"
kubectl get "deploy"
kubectl get "ing"
kubectl get "pvc"
kubectl get "pv"
kubectl get "secret"
kubectl get "cm"
kubectl get "ns"
kubectl get "crd"